Robust Fabrication of Nonstick,Noncorrosive, Conductive Graphene‐Coated Liquid Metal Droplets for Droplet‐Based,Floating Electrodes |
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Authors: | Yuzhen Chen Tingjiao Zhou Yaoyao Li Lifei Zhu Stephan Handschuh‐Wang Deyong Zhu Xiaohu Zhou Zhou Liu Tiansheng Gan Xuechang Zhou |
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Affiliation: | 1. College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, P. R. China;2. Department of Chemistry, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, P. R. China |
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Abstract: | Nontoxic liquid metals (conductive materials in a liquid state at room temperature) are an emerging class of materials for applications ranging from soft electronics and robotics to medical therapy and energy devices. Their sticky and corrosive properties, however, are becoming more of a critical concern for circuits and devices containing other metals as these are easily destroyed or contaminated by the liquid metals. Herein, a feasible method for fabricating highly conductive graphene‐coated liquid metal (GLM) droplets is reported and their application as nonstick, noncorrosive, movable, soft contacts for electrical circuits is demonstrated. The as‐prepared GLM droplets consist of a liquid‐phase soft core of liquid metal and a slippery outer layer of graphene sheets. These structures address the issue of simultaneous control of the wettability and conductivity of a soft electronic contact by combining extraordinary properties, i.e., nonstick, noncorrosive, yet exhibiting high electronic conductivity while in contact with metal substrates, e.g., Au, Cu, Ag, and Ni. As proof‐of‐concept, the as‐prepared GLM droplets are demonstrated as floating electrodes for movable, recyclable electronic soft contacts in electrical circuits. |
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Keywords: | flexible electrodes flexible electronics liquid metal droplets noncorrosive electrodes nonsticking metal droplets |
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